Valve-grinding tool.



J. J. MORRIS & M. EITEL. VALVE GRINDING TOOL;

APPLICATION FILED JAN-26. 1914-- 1,150,874.. v Patented Au 24, 1915.

l L J .L

. ll L I 22. 22

Elma M w.

4 H 12 JESSJM'ORR/J, Wanna 3 1 MART/IV [7 TEL.

Q of (16W fltkoznu;

JESS J. MORRIS AI'lD MARTIN EITEL, OF COLUMBUS, OHIO.

VALVE-GRINDING TOOL.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed January 26 1914. Serial No. 814,309.

To an whom it may concern .Be it'known that we, Jnss MARTIN EITEL, citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Valve-Grinding ,Tools, of which the following is a specification.

Our invention relates to valve grinding tools and aims particularly to provide a type of tool in which a number may be-used as a unit for simultaneously grinding a number or all of the valves of an internal combustion engine. l/Ve have provided a tool which .may be rigidly set in position upon the cylinders of an internal combustion engine, and by resorting to the use of a longitudinally extensible or adjustable connection between such elements, power may be applied in any desired manner and all of the valves ground simultaneously.

A further object of our invention is to provide a structure wherein the valves may beground by the repeated turning over of 2 the engineitself. To do this, we aim to provide a driving connect-ion between the crank shaft of the engine and the tools, after they are operatively mounted in position above the valves. "Welhave further provided a P yielding structure operable with the main shaft of the tool itself, which is rotated to turn the valve heads. This yielding connection permits the raising and lowering of ,the valve heads themselves, the same as 3.5 would be the case in their actual operation, ut always presenting a new surfaceto the valve seats when the valves are again'seated.

, Other objects of our invention"will become moreapparent after a detailed description similar characters 'of reference designate corresponding parts, and in which:

Figure 1 shows one form of internal combustion engine with our grinding tools mounted in position i to ,form a grinding unit, Fig. 2 is a longitudinal vertical section of one of the valve grinding tools, and, Fig.

3 is an elevation ofthe tool shown in Fig. 2 and taken at right angles to that .pf 2. Q. In the drawings, we have shown one form 6f engine designated in its entirety by the numeral 1, which engine -'ary inall modern combustion engine s, particularly those used in connection with-moa of the accompanying drawings, in whichtor vehicles, to provide a removable cap J. MORRIS and above each of the intake and exhaust valves,

which caps may be removed to effect the grinding operation. Further, the heads of practically all of the valves of the puppet type, are provided with a slot accommodating the insertion of the small end of a screw driver. We have, therefore, designed our structure to accommodate this modern construction and the tools themselves are des-, ignated bodily as 3, Fig. 1 showing four of these tools in their applied position. Each tool is provided with two outwardly projecting stub shafts 4 and 5, as will be hereinafter described, these shafts serving to apply and transmit the'power for driving from any suitable source. Inasmuch as the distance between cylinders and between valves of various types of engines may vary, we have provided a longitudinally extensible or adjustable connection, this connection taking the form of sleeves designated 6 and 7, the sleeve 6 being adapted to be securely mounted in position upon the stub shafts as mentioned, when the tools are applied to the valves of one cylinder, while the sleeve 7 forms a driving connection between the tools of adja 3811i, cylinders. It will be noted that the slee es 6 and 7 are shown as being held in their rigid position by means of set screws 8 and it will be further understood that the stub shafts l and 5 and the sleeves 6 and 7 are of relative lengths to permit of the use ofdriving connections between tools for distances covering the range of distances between all cylinders and valves of modern engines. Further, thestub shaft 4 upon the tool used in connection with the first cylinder is alsoprovided with a sleeve which may be either 6 or 7 and which sleeve is provided also provided 'th a valve casing shown-at 2. It is custom-.

with any type of driving connection, such as is shown by the pulley 9 and belt 10, it beingunderstood that power may begtransmitted from any suitable source and-may also be conveniently connected to the crank shaft of the engine itself, this forming a conven- I ient arrangement, but not limiting the scope of our invention. I

Each of the tools- 3, as is more clearlyshown in Figs. 2 and 3, comprises a mainbody member 11 suitably shaped to form a. journal for the rotatable shaft 12 removably carryinga valve engaging member 13in a slot l4: in its lower.,end by means'of the cotter 15. "Kfits upper end. this shaft is' provided in any suitable manner with a bevel gear 16, which bevel gear is adapted to mesh with each of the bevel pinions 17 disposed on opposite sides of the tool and carried by the stub shafts 4 and 5. It will be noted that the stub shafts 4 and 5 are suitably journaled by the cooperation of the body member ll-with the cap structure 18, which cap structure also carries an upwardly extendinghousing 19 within which isincased a spring 20 adapted to bear upon' the upper end of the shaft 12 and to thereby maintain the gear 16 in mesh with the pinions 17.

Further, the tension'of the spring 20 may be regulated by the vertical adjustment of the cap screw shown at 21, whichcap screw may be removed, if desired, to permit the placing of oil upon the gears, and then replaced. The body member 11 and the cap member 18 are each provided with laterally projecting cars 22 and 23 respectively, which cars, together with the screws 24: serve as a means of uniting the two sections, as is clearly illustrated. The lower end of the body member is also provided 'with an outwardly projecting shoulder 25 having its outer edge threaded and adapted to receive the collar 26. The shoulder 25 is also provided with a series of apertures 27, which may serve as a means of permitting the placement of the grinding preparation between the valve and its seat when the tool is mounted in its operative position. It must also beapparent that the collar 20, being threaded as is shown at 28, is adapted to be screwed into that portion of the cylinder above the valves themselves.

made this collar portion detachable, for the reason that the removable caps normally It will be noted that we have carriedabove the valves of an ordinary engine, may at some time vary, although these caps are usually of a standard size. In the event that one is found that is not of a standard size, the collar-26 may be removed and a supplemental collar used.

The operation of our device when used as a grinding unit, has been previously de scribed and the operation of the tool itself is as follows: The body 11 is mounted in position with. the valve engaging portion 13 in an operative position with the valve head. Turning of. the stub shaft 4 will cause rotation of the main shaft 12 and also the stub shaft 5, whereby power is transmitted to the adjacent tool. If this power is taken. by connecting the stub shaft 4 in some manner with the crank shaft of the engine and turning the engine over repeatedly, the spring 20 permits the elevation of the valve, the same as is done during the normal operation of the engine. It is understood thatthe eleration of the shaft 12 causes disengagement of the gear 16 with its pinions 17. but the spring will force these members to again 'come into mesh as soon as the valve has seated itself. Should it be desired to regulate the tension between the valve ca and its seat, the cap screw 21 may be ad usted to cause increased tension of the spring 20.

What we claim, is:-

1. A valve grinding unit comprising a plurality of grinding tools rigidly set m position on an engine in operative relation to its valves, means for applying power directly to one of said tools, and a detachable driving connection between said tools adjustable to various distances between tools.

2. A valve grinding unit comprising a plurality of grinding tools rigidly set in position on an engine in operative relation to its valves, a stub shaft projecting from op posite sides of each tool and forming the means for transmitting power to said tools, I means for applying power directly to one of said tools, and a sleeve connection between the stub shaft of adjacent tools and secured to said stub shaft in a manner to be longitudinally adjustable. a

3. A valve grinding unit comprising a. plurality of grinding tools rigidly and individually set in position on an engine in operative relation to its valves, :1 structure for applying power to the first of said tools,

.screwed into an engine in operative relation to its valves, means for applying power me directly to one of said tools, and coupling means between the remainder of said tools. 5. A valve grinding unit comprising a plurality of grinding tools each individually set in position on an engine in operative relation to its valves, a rotatable shaft forming a part of each tool, a gear on each shaft, stub shafts for said tools, gears for said stub shafts, coupling means for each pair of toolsconnecting said stub shafts, and means for applying power directly to one of said tools. I

6. A valve grinder comprising a plurality of upstanding shafts, a valve. engaging member carried by one end of each shaft, 11!; said shafts being mounted to permit their 'up and down movement when said members engagement with the engine valves, means for normally forcing said shafts toward the engine valves, and driving connections between the various upstanding'shafts.

8. A .valve grindmg tool comprising a bodyni'ember adapted to be rigidly set in posltion on an engine in operative relation to one of its valves, a shaft rotatably journaled in said body, a bevel gear operative'ly mounted on said shaft, two laterally projecting stub shafts extending out on opposite sides of said body, and complemental bevel gears for said stub shafts meshing with said first named bevel gear.

9. A valve grinding tool comprising a body member adapted to be rigidly set in position on an engine in operative relation to one of its valves, a shaft rotatably jourcm a! this m: my be obtained for the upper end of said shaft, laterally ex?" tending stub shafts, bevel pinions carried by said stub shafts and adapted to mesh with' said bevel gear, a cap carried by said body, and a spring within said cap and ada ted to bear upon the upper end .of said rstnamed shaft thereby permitting its moveinept longitudinally with respect to said In testimony whereof we aifix our signatures in presence of two witnesses.

JESS J. MORRIS.

MARTIN EITEL. Witnesses:

WALTER E. L. BooK, A. L. Pnnnrs.

Ave cents each, by addressing the Commissioner of 1mm, Washington, D. 0. 

